<%@ page contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<html>
<head>
<title>Insert title here</title>
</head>
<body>
	<h3>jsp3</h3>
	<%=request.getAttribute("request") %>

	<h3>jsp的注释</h3>
	<%
	int a = 1;
	int b = 1;
	%>
	
	<!--  <%=++a%>  -->  <!-- 会执行java代码但不会显示给浏览器  -->
	<%-- <%=++b%> --%>   <!-- 不会执行java代码  -->

	<%="a="+a+",b="+b %>
</body>
</html>